KRA/ORA: merged in a single plugin and added metadata support

- ORA/KRA: merged in a single plugin (KRA)
- ORA: removed standalone plugin
- KRA: use of logging category
- KRA: add metadata support by processing the embedded `documentinfo.xml`
- Improved signature lookup (see MR !17) and added test case

autotests/ossfuzz/build_fuzzers.sh

@@ -165,7 +165,6 @@ HANDLER_TYPES="ani
         jxl
         jxr
         kra
-        ora
         pcx
         pfm
         pic

autotests/ossfuzz/kimgio_fuzzer.cc

@@ -23,7 +23,7 @@
   Usage:
     python infra/helper.py build_image kimageformats
     python infra/helper.py build_fuzzers --sanitizer undefined|address|memory kimageformats
-    python infra/helper.py run_fuzzer kimageformats kimgio_[ani|avif|dds|exr|ff|hdr|heif|iff|jp2|jxl|jxr|kra|ora|pcx|pfm|pic|psd|pxr|qoi|ras|raw|rgb|sct|tim|tga|xcf]_fuzzer
+    python infra/helper.py run_fuzzer kimageformats kimgio_[ani|avif|dds|exr|ff|hdr|heif|iff|jp2|jxl|jxr|kra|pcx|pfm|pic|psd|pxr|qoi|ras|raw|rgb|sct|tim|tga|xcf]_fuzzer
 */
 
 #include <QBuffer>
@@ -65,11 +65,8 @@
 #include "jxr_p.h"
 #define HANDLER JXRHandler
 #elif defined KIMG_FUZZER_kra
-#include "kra.h"
+#include "kra_p.h"
 #define HANDLER KraHandler
-#elif defined KIMG_FUZZER_ora
-#include "ora.h"
-#define HANDLER OraHandler
 #elif defined KIMG_FUZZER_pcx
 #include "pcx_p.h"
 #define HANDLER PCXHandler

autotests/read/kra/src.kra.json

@@ -0,0 +1,19 @@
+[
+    {
+        "fileName" : "src.png",
+        "metadata" : [
+            {
+                "key" : "CreationDate",
+                "value" : "2016-01-27T10:40:16"
+            },
+            {
+                "key" : "ModificationDate",
+                "value" : "2016-01-27T10:41:28"
+            },
+            {
+                "key" : "Author" ,
+                "value" : "Boudewijn Rempt"
+            }
+        ]
+    }
+]

autotests/read/kra/src443_32bit.json

@@ -0,0 +1,15 @@
+[
+    {
+        "fileName" : "src.png",
+        "metadata" : [
+            {
+                "key" : "CreationDate",
+                "value" : "2016-01-27T10:40:16"
+            },
+            {
+                "key" : "ModificationDate",
+                "value" : "2026-07-16T07:00:36"
+            }
+        ]
+    }
+]